China News Service, Chongqing, October 13th, question: One Hongjiang River leaps over the Three Gorges, how can Chongqing undertake the ecological security of the upstream?
Author Liang Qinqing
"After the remediation of the Huaxi River bank, the previously bare ebb and flow zone was covered by green vegetation that is resistant to flooding and drought, the water is clearer and the banks are greener." said Liu Ying, a resident of Banan District, Chongqing City. After the Fall Zone Ecological Wetland Park, the canna and barma grass on the shore are growing satisfactorily, and the water ecological environment is much better.
Chongqing is the last pass of the ecological barrier in the upper reaches of the Yangtze River and plays an irreplaceable role in the ecological security of the middle and lower reaches of the Yangtze River.
Since 2017, the water quality of the Chongqing section of the main stream of the Yangtze River has been maintained at Class II, and the tributaries of the Yangtze River have completely eliminated the water quality of the sub-category V section, and the water environment safety of the Three Gorges Reservoir has been effectively guaranteed.
The reporter visited many places recently to learn about the effectiveness of the ecological protection of the Yangtze River in Chongqing.
Fluctuation Belt Wetland Park Becomes Camping Hotspot
The Huaxi River in Liu Ying's mouth is a first-class tributary of the Yangtze River. The river bank was originally a soil-sloping vegetable field, with garbage everywhere, and the water quality of the Yangtze River is not optimistic.
Zhang Pandeng, a staff member of China Construction Xinjiang Construction Engineering (Group) Co., Ltd., said that in recent years, a wetland park has been built on both sides of the Huaxi River. Wetlands, vegetation and other natural ecological bases form a riparian habitat where fish and birds inhabit, and the water quality in the mouth of the Yangtze River has been greatly improved.
"The Fluctuation Belt Wetland Park has created a public space close to nature. The original scar-like river shoreline has become a popular camping spot for the surrounding citizens." Liu Guanfeng, a local citizen, said that walking in the wetland park, he often sees twos and threes of people camping and resting here. , and enjoy the fun of "stealing a half-day leisure".
Today, Chongqing has established the Three Gorges Reservoir Leveling Area Protection and Management Research Center to coordinate the supervision of the leveling area and river management, and carry out a special campaign to "clear" the land and crops in the leveling area, effectively protecting the ecological environment of the leveling area.
The Xiaojiagou Reservoir in the Liangjiang New District of Chongqing is the source of the Tiaodun River in the Jialing River system. Now it has been built into an ecological lake with a shallow bottom.
Photo by Liang Qinqing
Big data "draws" a "picture" of sewage outfalls into the river
While managing the ecological environment in the ebb and flow areas of the Yangtze River Basin, Chongqing took the lead in the country to carry out pilot projects for the inspection and rectification of the sewage outfalls of the Yangtze River into the river.
Chongqing Liangjiang New Area, as one of the first pilots in the country for the inspection and rectification of sewage outfalls into the Yangtze River, effectively combines the remediation of sewage outfalls into the river and the comprehensive management of small watersheds to build a whole-process supervision system.
Xiaojiagou Reservoir, located in Liangjiang New District, is the source of the Tiaodun River in the Jialing River system, and was heavily eutrophicated before remediation.
Today, the water quality of the reservoir has been upgraded from inferior V to IV, and the breeze blows through the blue waves.
Sun Guojun, a staff member of the water department of the Liangjiang New District Bureau of the Chongqing Ecological Environment Bureau, introduced that the Liangjiang New District has built a special application scenario of "sewage outlet management" in the ecological environment big data intelligent management system, relying on cloud resources, cloud platforms, Internet, AI algorithms, etc. Big data analysis technology integrates multi-caliber basic information such as sewage treatment plants, pump stations, pipeline networks, rivers, watersheds, ecological red lines, etc., "draws" a "picture" of sewage outfalls into rivers, and analyzes the correlation between pollution sources and sewage outlets. , the implementation of grid scheduling rapid disposal.
Sun Guojun said that through the implementation of projects such as intelligent management and control of the watershed, Xiaojiagou Reservoir has basically achieved the main water quality indicators of the watershed section reaching the Class IV water quality standard.
The Xiaojiagou Reservoir in the Liangjiang New District of Chongqing is the source of the Tiaodun River in the Jialing River system. Now it has been built into an ecological lake with a shallow bottom.
Photo by Liang Qinqing
Automatic water quality monitoring station operates around the clock
To promote the prevention and control of pollution in the Yangtze River Basin, water quality monitoring is also an important part.
At the Jinjiahe Yuanzi automatic water quality monitoring station in the Yangtze River Basin, Bai Yili, deputy director of the water room of the Chongqing Ecological Environment Monitoring Center, introduced that when the monitoring section was first established, the assessment target was Category V. , identify the problem node and prescribe the right medicine. At present, the water quality of this section has been stable for a long time in class III.
At present, Chongqing has 164 municipal-level water quality monitoring sections. A total of 98 sections have built automatic water quality monitoring stations, all of which have real-time sampling and analysis capabilities for 5 water quality parameters and 4 pollutant indicators, and 24-hour real-time automatic monitoring and uploading of data. , each site can obtain about 24 sets of monitoring data every day.
In addition, Chongqing has also deepened the joint prevention and control of watersheds, and established a joint prevention and control mechanism for inter-provincial water pollution incidents in the upper and lower reaches of the river basin with Hubei, Hunan, Sichuan and Guizhou provinces; The Sichuan-Chongqing joint prevention and joint management plan (plan) for environmental protection, piloted to promote the "integrated" management of transboundary rivers.
Today's Yangtze River is coming from thousands of miles, and the wind blows up the blue waves, and the back waves push the front waves, rolling eastward.
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